Passover commemorates the going out of Egypt.
Shavuos commemorates the giving of the Torah. What historical
event can Yom Kippur be said to commemorate?
Moshe came down from Mount Sinai on the tenth of
Tishrei with the second set of Tablets, signifying forgiveness
for the sin of the golden calf. Yom Kippur can be said to commemorate
this event, the first national day of forgiveness for the Jewish
People.

For what kinds of sins does Yom Kippur not
atone?
Sins committed against other people, including hurting
someone's feelings. Yom Kippur does not atone for these sins
until the perpetrator gains forgiveness from the victim himself.
(Orach Chaim 606:1)

What should someone do if the person he wronged
does not forgive him the first time?
He should try at least two more times to gain forgiveness.(Orach
Chaim 606:1)

Why is the vidui confession included during
the mincha prayer the afternoon before Yom Kippur?
Lest one choke while eating the pre-Yom Kippur meal
and die without atonement, or lest one become intoxicated and
unable to concentrate on the prayers at night.(Mishna Berura
607:1)

On Yom Kippur we refrain from: Working, eating,
drinking, washing, anointing, family relations and wearing leather
shoes. Which three of these prohibitions are more severe than
the others?
Eating, drinking, working. (Mishna Kritut 1:1)

In what two ways does the prohibition against
eating food on Yom Kippur differ from the prohibition against
eating pork the entire year?

Although any amount is forbidden, eating on Yom
Kippur is not punishable by a Sanhedrin until one has eaten food
equal in volume to the size of a date. Eating pork, on the other
hand, is punishable for eating even an olive-sized piece, which
is smaller than a date. (Mishna Berura 612:1)

Who wrote the prayer "Unesaneh Tokef"
said during the chazan's repetition of musaf?
"Unesaneh Tokef" was written by Rabbi Amnon
of Mainz, Germany about 1000 years ago.

Why do we read the book of Yona on Yom Kippur?
The repentance of the people of Ninveh serves as
an inspiration to us to repent, and shows us that repentance can
overturn a Divine decree. (Shelah Hakadosh)

In what two ways does havdalah after Yom Kippur
differ from havdalah after Shabbos?
After Yom Kippur, the blessing over spices is omitted
from havdalah. Also, the source of the flame used for havdalah
after Yom Kippur must be a fire kindled before Yom Kippur. (Orach
Chaim 624:3,4)

Ideally, what mitzvah should one begin immediately
after Yom Kippur?
Building the succa. (Rema, Orach Chaim 624:5)

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